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Tripp....don't worry about it...you said the right thing '...I learned something'. I know a lot of guys who would have ran and said '......wwwhhaatt screw!!!??? ...don't know a thing about it'.
Been doing this for over twenty years...learned a few lessons like this in my time.

Originally Posted by monkeyman#1

I had a pack of those hissing screws once, didn't like em. Threw em out.

I've always said they're over rated.

I had a pack of those hissing screws once, didn't like em. Threw em out.

i replaced a compressor contactor on an old whip bench where the compressors electrical control bucket snaps into buss bars behind it....I drove my screw straight into a live 277 volt bar, sparks flew. I've done the screw through the evap too

Originally Posted by Joe Harper

Everyone knows that you dont have to put ALL the screws back in...

It's a well known fact that 3 out of every 4 is a packing screw.

Slightly off topic, we had a line of old kysor warren coffin freezers in a supermarket

The shop fitters came in one night and fitted sign brackets to the top of the divider down the centre.

They put a screw through the anti sweat heaters and tripped the breaker.

The lucky bastard managed not to get zapped

Everyone knows that you dont have to put ALL the screws back in...

A guy I know was putting one of those Frame and panel kits on a Trane Intellipak you guessed it. I think it was less than 100 lbs of R-22 but not much less. And I replaced an evaporator in a Trane Voyager that the air balance guy drilled a hole in. Brand new unit. he drilled it right near where the u bend goes back into the coil.

I had one of those days where everything goes wrong and I made the same mistake with a unibit into a 5/8 liquid line.

Originally Posted by crackertech

You should get a box of non hissing screw's.

LMAO!

Originally Posted by trippintl0

Surprisingly my boss didn't freak out; his words were "So did you learn something?"

you have a good boss

Did he say two pounds of vapor ?

LOL....thats why I always use a nut driver working near coils.........now that you posted this in a public forum you will be getting a large bill from the EPA.

Yea and what sucks is when that usually happens, its late in the day and that's the last screw you put back

Got to love a man who admits he made a mistake. Had to repair one on a small prep table once. Owner did same thing after cleaning coil up.

Originally Posted by trippintl0

So, I learned something new today regarding low profile walk-in cooler evaporator coil drain pans (specifically ColdZone).

This is the style where the fans are on the bottom mounted in the drain pan, sucks air up the bottom and blows it out the sides.

Well, the screws holding the drain pan in cannot be longer than about 3/4". Because if you use a 1" screw it makes a bad hissing sound as you drive in the screw with your impact driver.

Luckily another tech was nearby to weld up the hole in the U-Bend and get the thing running again...and luckily the thing was pumped down and off when it happened so only 2 lbs of R22 were lost!

Surprisingly my boss didn't freak out; his words were "So did you learn something?"

You should get a box of non hissing screw's.

Actually this was a really old unit from 1992 and the screws were so rusted that the shaft was very thin and couldn't get tight anymore, so I installed new screws.

I Know exactly how you felt ..< bbut the good thing iz it only happens once !

Did you loose the screw ?
When I'm taking those screws out I drop the pan a little and send them back in until the pan is ready to go back on.
If the speed nut is in the cover zip um back in there.

Walk-In Cooler OOPS

So, I learned something new today regarding low profile walk-in cooler evaporator coil drain pans (specifically ColdZone).

This is the style where the fans are on the bottom mounted in the drain pan, sucks air up the bottom and blows it out the sides.

Well, the screws holding the drain pan in cannot be longer than about 3/4". Because if you use a 1" screw it makes a bad hissing sound as you drive in the screw with your impact driver.

Luckily another tech was nearby to weld up the hole in the U-Bend and get the thing running again...and luckily the thing was pumped down and off when it happened so only 2 lbs of R22 were lost!

Surprisingly my boss didn't freak out; his words were "So did you learn something?"